When in Global Settings window the User Scale All
is accessed through the button .

Within User Scale All window the individual values
associated with each key within each octave can be adjusted by each slider key .
The octave to be adjusted is selected by clicking on the keyboard at the bottom
of window . The octave
that is being adjusted is indicated by the number in the upper left corner; in
this example: Octave 5 .
See User Scale Octave tutorial
for more.